The cause of an early morning fire at a vacant building that has closed a section of Welland Ave. in St. Catharines is still under investigation.

At 7:30 a.m. Wednesday, July 26, St. Catharines firefighters responded to reports of a fire at the vacant building located at 210 Welland Ave. Upon arriving on the scene, firefighters found the entire building engulfed in flames.

Firefighters extinguished the blaze, which involved demolishing a section of the building.

Emergency responders found an individual suffering from burn injuries outside the building. The individual was treated on scene and transported to hospital with non-life threatening injuries.

Welland Avenue between Geneva Street and Balfour Street will remain closed until further notice as part of the investigation. A damage estimate is unavailable at this time.